<template>
  <div>
    <!-- 导航面包屑 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        align-center
        finish-status="success"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="getTabInfo"
          @tab-click="getTabId"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyCateData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="fx"
                  v-for="(fx, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox> </el-checkbox-group
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyCateData"
              :key="item.ayyt_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- 因为upload组建中没有携带token所以必须手动绑定header -->
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="uploadPic"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>

      <!-- 展示预览图 -->
      <el-dialog
        title="提示"
        :visible.sync="PreviewVisible"
        width="50%"
        :before-close="PreviewClose"
      >
        <img :src="PreviewPic" alt="" class="PreviewPicStyle" />
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      manyCateData: [], // 动态参数数据
      onlyCateData: [], // 静态参数数据
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: [],
      },
      addFormRules: {
        goods_name: [
          {
            required: true,
            message: '请输入商品名称',
            trigger: 'blur',
          },
        ],
        goods_price: [
          {
            required: true,
            message: '请输入商品价格',
            trigger: 'blur',
          },
        ],
        goods_number: [
          {
            required: true,
            message: '请输入商品数量',
            trigger: 'blur',
          },
        ],
        goods_weight: [
          {
            required: true,
            message: '请输入商品重量',
            trigger: 'blur',
          },
        ],
        goods_cat: [
          {
            required: true,
            message: '请选择商品',
            trigger: 'blur',
          },
        ],
      },

      catelist: [], // 分类数据
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
        expandTrigger: 'hover',
      },
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      PreviewVisible: false,
      PreviewPic: '',
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      console.log(res)
      if (res.meta.status !== 200) {
        this.$message.error('获取分类数据失败')
      }
      this.$message.success('获取分类信息成功')
      this.catelist = res.data
    },
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        // 判断级联选择器的内容只能选择第三级，否则置空
        this.addForm.goods_cat = []
      }
    },
    getTabInfo(activeName, oldActiveName) {
      console.log('离开的页面', oldActiveName, '进入的页面', activeName)
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
    },
    async getTabId() {
      console.log(this.activeIndex)
      if (this.activeIndex === '1') {
        console.log('动态参数')
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' },
          }
        )
        console.log('-2-', res)
        if (res.meta.code !== '200') {
          this.$message.error('获取动态参数失败')
        }
        this.$message.success('获取动态参数成功')
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(',')
        })
        this.manyCateData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' },
          }
        )
        console.log('-3-', res)
        if (res.meta.code !== 200) {
          this.$message.error('获取静态参数失败')
        }
        this.$message.success('获取静态参数成功')
        this.onlyCateData = res.data
      }
    },
    // 点击上传事件
    handlePreview(file) {
      console.log('预览', file)
      this.PreviewPic = file.response.data.url
      this.PreviewVisible = true
    },
    // 点击移除事件
    handleRemove(file) {
      // 移除操作流程
      // 1、首先获取到移除的对象
      // 2、存储临时文件路径
      // 3、使用findIndex查找路径是否存在并拿到索引值
      // 4、使用splice移除数组中的照片
      console.log('移除', file)
      const fileList = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex((x) => x.pic === fileList)
      this.addForm.pics.splice(i, 1)
      console.log('移除后', this.addForm)
    },
    // 上传成功触发的钩子
    uploadPic(response) {
      console.log(response)
      const picsPath = {
        pic: response.data.tmp_path,
      }
      this.addForm.pics.push(picsPath)
      console.log(this.addForm)
    },
    // 关闭弹出框
    PreviewClose() {
      this.PreviewVisible = false
    },
    add() {
      console.log('22', this.addForm)
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项')
        }
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态参数
        this.manyCateData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' '),
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyCateData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        console.log('666', form)
        const { data: res } = await this.$http.post('goods', form)
        console.log('dd', res)
        if (res.meta.status === 201) {
          this.$message.success(res.meta.msg)
          this.$router.push('/goods')
        } else if (res.meta.status === 400) {
          this.$message.warning(res.meta.msg)
        } else {
          this.$message.error(res.meta.msg)
        }
      })
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 !important;
  margin-right: 10px !important;
}
.PreviewPicStyle {
  width: 100%;
}
.btnAdd {
  margin-top: 15px;
}
</style>
